The Tank › Is an indirect hot water heater really the most efficient option? › Reply To: Is an indirect hot water heater really the most efficient option?
I know electricity prices vary greatly depending upon location. And some areas have deregulated.
In Asheville, NC on the RTOUD rate I heat my water for $0.055/kWh. I have a 105 gallon heater and heat off-peak only (which is currently just under 13 hours/day). WH output at 120 volts is 1125 watts. Running these numbers for 30 days yields less than $24 for the three of us. Of course on-peak electricity effectively cost me $0.124/kWh last month.
So depending upon unit cost of primary source, electricity can be a competitive option.